| 发明名称 |
Data Backup Recovery |
| 摘要 |
A mechanism is provided for recovering a data backup comprising a data image and a point-in-time copy of the data image. A virtual data image storage device is provide for storing a copy of the data image, and a virtual snapshot storage device is provided for storing data of the point-in-time copy. The data image is copied to the virtual data image storage device, and data from the point-in-time copy of the data image is copied to the virtual snapshot storage device responsive to the data not existing in the virtual data image storage device. |
| 申请公布号 |
US2015378836(A1) |
申请公布日期 |
2015.12.31 |
| 申请号 |
US201314760056 |
申请日期 |
2013.12.19 |
| 申请人 |
INTERNATIONAL BUSINESS MACHINES CORPORATION |
发明人 |
Beeken Christopher B.;Fuente Carlos F. |
| 分类号 |
G06F11/14;G06F17/30 |
主分类号 |
G06F11/14 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
1. A method, in a data processing system, for recovering a data backup comprising a data image and a point-in-time copy of the data image, the method comprising:
providing a virtual data image storage device for storing a copy of the data image; copying the data image to the virtual data image storage device; providing a virtual snapshot storage device for storing data of the point-in-time copy of the data image; mapping the virtual snapshot storage device to data of the virtual data image storage device; determining whether data of the point-in-time copy of the data image exists in the virtual data image storage device; and copying data from the point-in-time copy of the data image to the virtual snapshot storage device responsive to the data not existing in the virtual data image storage device. |
| 地址 |
Armonk NY US |
